Frustrated phases induced in binary mixtures of hockey-stick and chiral rod-like mesogens

被引：12

作者：

Novotna, V. ^{[1
]}

Glogarova, M. ^{[1
]}

Kozmik, V. ^{[2
]}

Svoboda, J. ^{[2
]}

Hamplova, V. ^{[1
]}

Kaspar, M. ^{[1
]}

Pociecha, D. ^{[3
]}

机构：

[1] Acad Sci Czech Republ, Inst Phys, Prague 18221 8, Czech Republic

[2] Inst Chem Technol, Dept Organ Chem, CZ-16628 Prague 6, Czech Republic

[3] Univ Warsaw, Dept Chem, PL-02089 Warsaw, Poland

来源：

SOFT MATTER | 2013年 / 9卷 / 03期

关键词：

CARBOXYL CONNECTING GROUPS; SHAPED LIQUID-CRYSTALS; BENT-CORE MOLECULES; SMECTIC-C PHASE; SUPERSTRUCTURAL CHIRALITY; CYBOTACTIC GROUPS; POLAR ORDER; MESOPHASES; DIRECTION; SMA;

D O I：

10.1039/c2sm27194j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two liquid crystalline compounds with different shapes and chirality aspects have been used to prepare binary mixtures. An achiral hockey stick mesogen exhibiting a nematic-smectic C synclinic-smectic C anticlinic phase sequence has been blended with a chiral rod-like mesogen with a SmA*-ferroelectric (FE) SmC*-antiferroelectric (AF) SmCA* phase sequence. Several frustrated phases (blue phases, TGBA and TGBC phases) have been induced in broad temperature and concentration ranges. By tailoring the composition of the chiral compound we succeeded in preparation of mixtures with unusual mesomorphic behaviour. We demonstrate a new system showing chiral nematic and antiferroelectric phases in its phase sequence.

引用

页码：647 / 653

页数：7

共 30 条

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